590 



MUSEO NACIONAL DE BUENOS AIRES. 



Corbula prisca, 429, 459. 



Corbula pseudopatagonica, 358, 388. 



Corbula pulchella, 73, 105, 106, 321,322, 



358, 360, 362, 388, 423, 538. 

 Corbula pulchella Hatcheri, 105, 108. 

 Corbula pulchella juliana, 322. 

 Corbula sehuena, 51, 52. 

 Corbula striatula, 358, 388. 

 Corbula sulcata, 534. 

 Corbula zealandica, 821. 

 Crania Pourtalesi, 471, 472. 

 Crassatella Kokeni, 279. 

 Crassatella longior, 278. 

 Crassatella Lyelli, 279. 

 Crassatella maldonadoensis, 450. 

 Crassatellites, 280, 499, 501. 

 Crassatellites attenuata, 86. 

 Crassatellites australis, 86. 

 Crassatellites Kokeni, 103, 108, 279. 

 Crassatellites Lahillei, 279. 

 Crassatellites longior, 103, 108, 278. 

 Crassatellites longior Lahillei, 103, 278. 

 Crassatellites Lyelli, 279. 

 Crassatellites quartus, 103, 108, 279. 

 Crassatellites patagonicus, 103, 108, 279. 

 Crassatellites suburbana, 356, 358, 381. 

 Crassinella, 278, 280, 281. 

 Crassinella acutus, 280. 

 Crassinella Dalli, 103, 280. 

 Crassinella maldonadoensis, 423, 450. 

 Crenatula, 526. 

 Crenella, 501. 



Crenella divaricata, 271, 277, 538, 558. 

 Crenella divaricata camaronesia, 73, 74, 



103, 277. 

 Crenella duplinensis, 277. 

 Crenella elongata, 86. 

 Crepidula, 89, 145, 501, 502, 504, 506. 

 Crepidula aculeata, 422, 425, 427, 511, 



520, 532. 

 Crepidula decipiens, 150. 

 Crepidula dilatata, 145, 146, 147, 401, 523, 



525. 

 Crepidula fornicata, 422, 425, 427, 532, 

 Crepidula gregaria, 82, 83, 89, 98, 108, 



146, 147, 333, 310, 499. 

 Crepidula hepática, 534. 

 Crepidula incurva, 89, 148. 

 Crepidula pallida, 523. 

 Crepidula paranensis, 357, 366. 

 Crepidula patagónica, 147, 392,401,420, 



422, 497. 508, 557. 

 Crepidula peruviana, 147. 523. 

 Crepidula rugulosa, 147, 401, .509. 

 Crepidula subdilatata, 523. 



Crepidula uneinata, 148. 



Crepidula unguiformis, 507, 517, 521, 



523, 525. 

 Criptospira rubens, 196. 

 Crossea, 41. 



Crucibulum, 145, 361, 366, 502, 504, 506. 

 Crucibulum argentinum, 357, 360, 366. 

 Crucibulum auricula, 366. 

 Crucibulum dubium, 98, 147. 

 Crucibulum tubiferum, 145. 

 Crucibulum tubiferum cinérea, 145. 

 Cucullaea, 5, 93, 231, 484, 485, 492, 499, 



501. 

 Cucullaea alta, 83, 85, 89, 93, 102, 106, 



108, 232, 499. 

 Cucullaea antárctica, 75. 

 Cucullaea attenuata, 85. 

 Cucullaea Dalli, 75, 92, 322. 

 Cucullaea Dalli colona, 93. 

 Cucullaea Darwini, 233. 

 Cucullaea multiradiata, 102, 232, 233. 

 Cucullaea ponderosa, 85, 88. 

 Cucullaea rocana, 30, 35. 

 Cucullaea singularis, 85. 

 Cucullaea tehuelcha, 5, 30. 

 Cucullaea Worthingtuni, 85. 

 CucuUaria, 79, 231-234, 484,492, 500. 

 CucuUaria Ameghinoi, 102, 233, 234. 

 CucuUaria heterodonta, 231. 

 CucuUaria tridentata, 102, 233, 234, 237, 



238. 

 Cumingia, 316. 

 Cumingia aff. mutica, .517. 

 Cuneoarca, 372. 

 Cuneocorbula, 321. 

 Cuspidaria Kirki, 86, 91. 

 Cyamium, 505. 

 Cyanoc3^clas, 462, 469. 

 Cyanum, 512. 

 Cyclocardia, 413. 

 Cymatium, 174. 

 Cymbiola, 201-205, 208, 209, 496, 499, .504 



521. 

 Cymbiola alta, 82, 101, 106, 108, 203, 204, 



210. 

 Cymbiola Ameghinoi, 101, 108, 203, 204, 



209, 538. 

 Cymbiola ancilla, 201, 203, 209, 537. 

 Cymbiola angulata, 202-204, 209, 422, 



425, 427, 537. 

 Cymbiola Becki, 101, 203, 210, 212. 

 Cymbiola brasiliana, 203, 204, 209, 422, 



425, 537, 538. 

 Cymbiola Burnieisteri, 101, 108, 210. 

 Cymbiola cannada, 212. 



